On the Cohen -nuclear sublinear operators.
On the equality between some classes of operators on Banach lattices
We establish some sufficient conditions under which the subspaces of Dunford-Pettis operators, of M-weakly compact operators, of L-weakly compact operators, of weakly compact operators, of semi-compact operators and of compact operators coincide and we give some consequences.
On the lattice properties of invariant functions for Markov operators on C(X)
On the lattice structure of invariant functions for Markov operators on
On the Leontief's problem in Banach lattices
On the modulus of measures with values in topological Riesz spaces.
The paper is devoted to a study of some aspects of the theory of (topological) Riesz space valued measures. The main topics considered are the following. First, the problem of existence (and, particularly, the so-called proper existence) of the modulus of an order bounded measure, and its relation to a similar problem for the induced integral operator. Second, the question of how properties of such a measure like countable additivity, exhaustivity or so-called absolute exhaustivity, or the properties...
On the modulus of one-parameter semigroups.
On the o-Spektrum of Regular Operators and the Spectrum of Measures.
On the positive projection constant
On the positivity of the unit element in a normed lattice ordered algebra
On the Representation of Banach Lattices by Continuous Numerical Functions.
On the Structure of Non-Weakly Compact Operators on Banach Lattices.
On the sublinear operators factoring through .
On the “zero-two” law for positive contractions in the Banach-Kantorovich lattice
In the present paper we prove the “zero-two” law for positive contractions in the Banach-Kantorovich lattices , constructed by a measure with values in the ring of all measurable functions.
On Theorems of de Pagter and Ando-Krieger.
On unconditional convergence of series in Banach lattices
On uniformly nonsquare points and nonsquare points of Orlicz spaces
For Orlicz spaces endowed with the Orlicz norm and the Luxemburg norm, the criteria for uniformly nonsquare points and nonsquare points are given.
Once more on positive commutators
Let A and B be bounded operators on a Banach lattice E such that the commutator C = AB - BA and the product BA are positive operators. If the product AB is a power-compact operator, then C is a quasi-nilpotent operator having a triangularizing chain of closed ideals of E. This answers an open question posed by Bračič et al. [Positivity 14 (2010)], where the study of positive commutators of positive operators was initiated.
Operator ideal properties of vector measures with finite variation
Given a vector measure m with values in a Banach space X, a desirable property (when available) of the associated Banach function space L¹(m) of all m-integrable functions is that L¹(m) = L¹(|m|), where |m| is the [0,∞]-valued variation measure of m. Closely connected to m is its X-valued integration map Iₘ: f ↦ ∫f dm for f ∈ L¹(m). Many traditional operators from analysis arise as integration maps in this way. A detailed study is made of the connection between the property L¹(m) = L¹(|m|) and the...
Operators Factoring through Banach Lattices and Ideal Norms
A new, unified presentation of the ideal norms of factorization of operators through Banach lattices and related ideal norms is given.